<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>14-案例-小睿的书架</title>
</head>
<body>
    
    <div id="app">
        <h1>小睿的书架</h1>
        <ul>
            <li v-for="(item,index) in bookList" :key="item.id">
                <span>{{item.name}}</span>
                <span>{{item.author}}</span>
                <button @click="del(item.id)">删除</button>
            </li>
        </ul>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.16/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el:'#app',
            data:{
                bookList:[
                    {id:1,name:'《红楼梦》',author:'曹雪芹'},
                    {id:2,name:'《西游记》',author:'吴承恩'},
                    {id:3,name:'《水浒传》',author:'施耐庵'},
                    {id:4,name:'《三国演义》',author:'罗贯中'}
                ]
            },
            methods: {
                del(id){
                    // console.log('删除',id)
                    // 通过 id 进行删除数组中的 对应项 -> filter (不会改变原数组)
                    // filter:根据条件，保留满足条件的对应项，得到新数组
                    // console.log(this.bookList.filter(item => item.id !== id))
                    this.bookList = this.bookList.filter(item => item.id !== id)
                }
            }
        })
    </script>
</body>
</html>